

class Screen(object):
    @property
    def width(self):
        return self.__width

    @width.setter
    def width(self,width):
        self.__width = width

    @property
    def height(self):
        return self.__height

    @height.setter
    def height(self,height):
        self.__height = height


    @property
    def resolution(self):
        return self.__height*self.__width

s = Screen()
s.width = 1024
s.height = 768
print('resolution =',s.resolution)
if s.resolution == 786432:
    print('测试通过')
else:
    print('测试失败')
